linux-toradex.git/drivers/dma/timb_dma.c, branch v5.14

dmaengine: timb_dma: convert tasklets to use new tasklet_setup() API

2020-09-18T06:49:07+00:00

In preparation for unconditionally passing the
struct tasklet_struct pointer to all tasklet
callbacks, switch to using the new tasklet_setup()
and from_tasklet() to pass the tasklet pointer explicitly.

Signed-off-by: Romain Perier 
Signed-off-by: Allen Pais 
Link: https://lore.kernel.org/r/20200831103542.305571-29-allen.lkml@gmail.com
Signed-off-by: Vinod Koul

dmaengine: Replace zero-length array with flexible-array

2020-06-16T04:08:30+00:00

There is a regular need in the kernel to provide a way to declare having a
dynamically sized set of trailing elements in a structure. Kernel code should
always use “flexible array members”[1] for these cases. The older style of
one-element or zero-length arrays should no longer be used[2].

[1] https://en.wikipedia.org/wiki/Flexible_array_member
[2] https://github.com/KSPP/linux/issues/21

Signed-off-by: Gustavo A. R. Silva

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174

2019-05-30T18:26:41+00:00

Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation this program is
  distributed in the hope that it will be useful but without any
  warranty without even the implied warranty of merchantability or
  fitness for a particular purpose see the gnu general public license
  for more details

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 655 file(s).

Signed-off-by: Thomas Gleixner 
Reviewed-by: Allison Randal 
Reviewed-by: Kate Stewart 
Reviewed-by: Richard Fontana 
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070034.575739538@linutronix.de
Signed-off-by: Greg Kroah-Hartman

dmaengine: timb_dma: Use struct_size() in kzalloc()

2019-01-20T05:20:07+00:00

One of the more common cases of allocation size calculations is finding the
size of a structure that has a zero-sized array at the end, along with memory
for some number of elements for that array. For example:

struct foo {
    int stuff;
    void *entry[];
};

instance = kzalloc(sizeof(struct foo) + sizeof(void *) * count, GFP_KERNEL);

Instead of leaving these open-coded and prone to type mistakes, we can now
use the new struct_size() helper:

instance = kzalloc(struct_size(instance, entry, count), GFP_KERNEL);

This code was detected with the help of Coccinelle.

Signed-off-by: Gustavo A. R. Silva 
Signed-off-by: Vinod Koul

dmaengine: timb_dma: Use proper enum in td_prep_slave_sg

2018-10-02T14:41:09+00:00

Clang warns when implicitly converting from one enumerated type to
another. Avoid this by using the equivalent value from the expected
type.

drivers/dma/timb_dma.c:548:27: warning: implicit conversion from
enumeration type 'enum dma_transfer_direction' to different enumeration
type 'enum dma_data_direction' [-Wenum-conversion]
                td_desc->desc_list_len, DMA_MEM_TO_DEV);
                                        ^~~~~~~~~~~~~~
1 warning generated.

Reported-by: Nick Desaulniers 
Signed-off-by: Nathan Chancellor 
Reviewed-by: Nick Desaulniers 
Signed-off-by: Vinod Koul

dmaengine: timb_dma: fix spelling mistake: "Couldnt" -> "Couldn't"

2017-12-11T03:27:38+00:00

Trivial fix to spelling mistake in dev_err error message text.

Signed-off-by: Colin Ian King 
Signed-off-by: Vinod Koul

dmaengine: timb_dma: convert callback to helper function

2016-08-08T02:41:41+00:00

This is in preperation of moving to a callback that provides results to the
callback for the transaction. The conversion will maintain current behavior
and the driver must convert to new callback mechanism at a later time in
order to receive results.

Signed-off-by: Dave Jiang 
Reviewed-by: Lars-Peter Clausen 
Signed-off-by: Vinod Koul

dmaengine: Remove site specific OOM error messages on kzalloc

2016-06-21T16:05:00+00:00

If kzalloc() fails it will issue it's own error message including
a dump_stack(). So remove the site specific error messages.

Signed-off-by: Peter Griffin 
Acked-by: Jon Hunter 
Acked-by: Linus Walleij 
Signed-off-by: Vinod Koul

dmaengine: Remove remaining FSF mailing addresses

2015-07-06T13:48:53+00:00

Commit 3b62286d0ef7 ("dmaengine: Remove FSF mailing addresses") left Free
Software Foundation mailing address still in two files. Remove it now.

Signed-off-by: Jarkko Nikula 
Signed-off-by: Vinod Koul

dmaengine: td: Rename device_control

2014-12-22T07:03:22+00:00

Rename the device_control callback of the Timberdal DMA driver to terminate_all
since it's all it's really doing. That will eventually be used to retrieve
slave capabilities.

Signed-off-by: Maxime Ripard 
Signed-off-by: Vinod Koul